<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="(item,index) in cartInfoList" :key="item.id">
          <li class="cart-list-con1">
            <input type="checkbox" :checked="item.isChecked" @change="checkcarinfo(item.skuId,item.isChecked,index)" name="chk_list">
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl">
            <div class="item-msg">{{item.skuName}}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{item.skuPrice}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="changnum('sub',item)">-</a>
            <input autocomplete="off" type="text" :value="item.skuNum" @change="changnum('change',item,$event)" minnum="1" class="itxt">
            <a href="javascript:void(0)" class="plus" @click="changnum('add',item)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{item.skuPrice*item.skuNum}}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="deldata(item.skuId)">删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" v-model="checkall" type="checkbox">
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="dellist">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>{{chacknum}}</span>件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{pickall}}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade" >结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import req from '@/http/reqdata'
let {reqgetupdatashopcart,reqgetupdatacheckshopcart,reqgetupdatacheckallshopcart,reqgetdelshopcart,reqgetdelshopcartlist,reqgetComshopcart} =req
import {skuNumReg} from '@/utils/reg'

export default {
  name: 'ShopCart',
  data(){
    return {
      cartInfoList:[],
    }
  },
  computed:{
    chackarr(){
      return this.cartInfoList.filter(item => item.isChecked === 1)
    },
    chackidarr(){
          let arr = []
          this.chackarr.forEach(item => {
            arr.push(item.skuId)
          })
          return arr
    },
    chacknum(){
        let num = 0
        this.chackarr.forEach(item =>{
          num += item.skuNum
        })
        return num
    },
    pickall(){
        let pick = 0
        this.chackarr.forEach(item =>{
          pick += item.skuPrice*item.skuNum
        })
        return pick
    },
     checkall:{
      get(){
        return this.cartInfoList.every(item => item.isChecked === 1)
      },
      async set(val){
        let check = val ? 1 :0

        // 单个改变的接口
        // await this.cartInfoList.forEach( (item) => {
          
        //    this.checkcarinfo(item.skuId,item.isChecked)
        // })

        // 多个改变的接口
        // 获取id列表
        let idarr = this.cartInfoList.map(item =>{
          item.isChecked = check
          return item.skuId
        })
        
        let req = await reqgetupdatacheckallshopcart(check,idarr)
      }
     }
  },
  methods:{
    async getupdatashopcart(){
        let newdata = await reqgetupdatashopcart()
        this.cartInfoList = newdata.data[0].cartInfoList
        // console.log(this.cartInfoList );
    },

    async checkcarinfo(id,isChecked,index){
      let check = 1-isChecked
      let req = await reqgetupdatacheckshopcart(id,check)

      // this.getupdatashopcart()
      if(req.code === 200){
        this.cartInfoList[index].isChecked = check
      }
    },
    // 单个删除
    async deldata(id){
      let req = await reqgetdelshopcart(id)
      if(req.code === 200){
        this.getupdatashopcart()
      }
    },
    // 多个删除
    async dellist(){
      this.chackidarr.forEach(item => {
        this.deldata(item)
      })
      // let req = await reqgetdelshopcartlist(this.chackidarr)
      // if(req.code === 200){
      //   this.getupdatashopcart()
      // }
    },
    changnum(type,data,event){
      let num = 0
      switch(type){
        case 'sub':
          if(data.skuNum>1){
            data.skuNum--
            num--
          }
        break;
        case 'add':
          if(data.skuNum<200){
            data.skuNum++
            num++
          }
        break;
        case 'change':
          let newdata = event.target.value
          let olddata = data.skuNum
          if(skuNumReg.test(newdata)){
            data.skuNum = event.target.value - 0
            num = data.skuNum - olddata
            if(data.skuNum >200){
              data.skuNum = 200
              num = 200 - olddata
            }
          }else{
            event.target.value = olddata
          }
      }
      if(num === 0) return
      reqgetComshopcart(data.skuId,num)
    }
  },
  mounted(){
    this.getupdatashopcart()
  }
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;
  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }
  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;
      & > div {
        float: left;
      }
      .cart-th1 {
        width: 25%;
        input {
          vertical-align: middle;
        }
        span {
          vertical-align: middle;
        }
      }
      .cart-th2 {
        width: 25%;
      }
      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }
    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;
      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;
        & > li {
          float: left;
        }
        .cart-list-con1 {
          width: 15%;
        }
        .cart-list-con2 {
          width: 35%;
          img {
            width: 82px;
            height: 82px;
            float: left;
          }
          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }
        .cart-list-con4 {
          width: 10%;
        }
        .cart-list-con5 {
          width: 17%;
          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }
  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: 'Microsoft YaHei';
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>